diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index 44d13f3817f12e..f4d336ee0769bd 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -3,12 +3,12 @@ ARG BASE_IMAGE_TYPE=slim
 # --------------------------------------
 # slim image
 # --------------------------------------
-FROM ghcr.io/renovatebot/base-image:2.8.4@sha256:466402ea5dd0d3d089491c18344daf2e4a584164e9fe790e914e422cfe3dced1 AS slim-base
+FROM ghcr.io/renovatebot/base-image:2.8.5@sha256:caa17b1486df8865f204f33f2f0aba9904acc35dd01919eed94fb41f184fb673 AS slim-base
 
 # --------------------------------------
 # full image
 # --------------------------------------
-FROM ghcr.io/renovatebot/base-image:2.8.4-full@sha256:de0543987d0ea1759fca05f19f1dba00d47c409c21d5688e5874d72284b9d50b AS full-base
+FROM ghcr.io/renovatebot/base-image:2.8.5-full@sha256:41f04241ae3235f10578326a333e4d951ba271f7de222339b298850c01f6f2dc AS full-base
 
 # --------------------------------------
 # build image